In order to study the change in mechanical properties and anti-flammablilty of ethylene-ethylacrylate copolymer(EEA) very low density polyethylene(VLDPE) compound that could be used as communication cable sheath using Mg(OH)₂ as a non-toxic flame retardant, 100, 125, and 150phr Mg(OH)₂ were added to 100 parts of EEA-VLDPE compound, 100 EEA : 0 VLDPE, 50 EEA : 50 VLDPE, and 0 EEA : 100 VLDPE, respectively. Mg(OH)₂ was a good non-toxic flame retardant for communication cable sheath and anti-flammability increased with the amount of Mg(OH)₂ in compound. The mechanical properties-MI, Ts, and Eb-decreased with increasing in the mixing ratio of EEA but oxygen index(OI) increased with increasing in the amount of EEA. The best composition of Mg(OH)₂ in this study was 150phr to 50 EEA : 50 VLDPE compound for the anti-flammability.